package com.itheima.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itheima.constant.MessageConstant;
import com.itheima.entity.Result;
import com.itheima.service.MemberService;
import com.itheima.service.ReportService;
import com.itheima.service.SetmealService;
import com.itheima.utils.DateUtils;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.math.BigDecimal;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * 统计报表
 */

@RestController
@RequestMapping("/report")
public class ReportController {
    @Reference
    private MemberService memberService;
    @Reference
    private SetmealService setmealService;

    //获取会员数量统计数据
    //获取时间段会员数量统计数据
    @RequestMapping("/getMemberReport")
    public Result getMemberReport(@RequestBody String[] strings){
        try {
            List<String> months = new ArrayList<>();
            //获取月份
            String beginString = strings[0];
            String endString = strings[1];
            String[] beginSplit = beginString.split("-");
            String[] endSplit = endString.split("-");
            int monthNum = (Integer.parseInt(endSplit[0]) - Integer.parseInt(beginSplit[0])) * 12 +
                    (Integer.parseInt(endSplit[1]) - Integer.parseInt(beginSplit[1]));
            //判断开始和结束的时间是否合理
            int result = endString.compareTo(beginString);
            if (result==0){
                months.add(endString);
            }
            if (result>0){
                //封装月份到集合
                SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
                Date begin = sdf.parse(beginString);
                Calendar calendar = Calendar.getInstance();
                calendar.setTime(begin);//Date转Calendar
                months.add(DateUtils.parseDate2String(calendar.getTime(),"yyyy.MM"));
                for (int i = 0; i < monthNum; i++) {
                    calendar.add(Calendar.MONTH,1);
                    months.add(DateUtils.parseDate2String(calendar.getTime(),"yyyy.MM"));
                }
            }
            //根据月份查会员数量
            List<Integer> memberCount = memberService.findMemberCountByMonths(months);
            Map<String, Object> data = new HashMap<>();
            data.put("months",months);
            data.put("memberCount",memberCount);
            return new Result(true,MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS,data);
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(false,MessageConstant.GET_MEMBER_NUMBER_REPORT_FAIL);
        }
    }

    //获取套餐占比统计数据
    @RequestMapping("/getSetmealReport")
    public Result getSetmealReport(){
        try{
            List<String> setmealNames = new ArrayList<>();//封装套餐名称集合
            List<Map> setmealCount = setmealService.getSetmealReport();//套餐名称和预约数量集合
            if(setmealCount != null && setmealCount.size() > 0){
                for (Map map : setmealCount) {
                    String name = (String) map.get("name");//套餐名称
                    setmealNames.add(name);
                }
            }

            Map<String,Object> map = new HashMap<>();
            map.put("setmealNames",setmealNames);
            map.put("setmealCount",setmealCount);
            return new Result(true, MessageConstant.GET_SETMEAL_COUNT_REPORT_SUCCESS,map);
        }catch (Exception e){
            e.printStackTrace();
            return new Result(false, MessageConstant.GET_SETMEAL_COUNT_REPORT_FAIL);
        }
    }

    @Reference
    private ReportService reportService;

    //获取运营统计数据
    @RequestMapping("/getBusinessReportData")
    public Result getBusinessReportData(){
        try{
            Map<String,Object> map = reportService.getBusinessReportData();
            return new Result(true, MessageConstant.GET_BUSINESS_REPORT_SUCCESS,map);
        }catch (Exception e){
            e.printStackTrace();
            return new Result(false, MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }

    //导出运营数据到Excel并提供客户端下载
    @RequestMapping("/exportBusinessReport")
    public Result exportBusinessReport(HttpServletRequest request, HttpServletResponse response){
        try{
            Map<String,Object> result = reportService.getBusinessReportData();

            //取出返回结果数据，准备将报表数据写入到Excel文件中
            String reportDate = (String) result.get("reportDate");
            Integer todayNewMember = (Integer) result.get("todayNewMember");
            Integer totalMember = (Integer) result.get("totalMember");
            Integer thisWeekNewMember = (Integer) result.get("thisWeekNewMember");
            Integer thisMonthNewMember = (Integer) result.get("thisMonthNewMember");
            Integer todayOrderNumber = (Integer) result.get("todayOrderNumber");
            Integer thisWeekOrderNumber = (Integer) result.get("thisWeekOrderNumber");
            Integer thisMonthOrderNumber = (Integer) result.get("thisMonthOrderNumber");
            Integer todayVisitsNumber = (Integer) result.get("todayVisitsNumber");
            Integer thisWeekVisitsNumber = (Integer) result.get("thisWeekVisitsNumber");
            Integer thisMonthVisitsNumber = (Integer) result.get("thisMonthVisitsNumber");
            List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");

            //动态获取Excel模板文件绝对磁盘路径
            String filePath = request.getSession().getServletContext().getRealPath("template") + File.separator + "report_template.xlsx";

            //基于POI在内存中创建一个Excel文件
            XSSFWorkbook excel = new XSSFWorkbook(new FileInputStream(new File(filePath)));

            XSSFSheet sheet = excel.getSheetAt(0);

            XSSFRow row = sheet.getRow(2);
            row.getCell(5).setCellValue(reportDate);//日期

            row = sheet.getRow(4);
            row.getCell(5).setCellValue(todayNewMember);//新增会员数（本日）
            row.getCell(7).setCellValue(totalMember);//总会员数

            row = sheet.getRow(5);
            row.getCell(5).setCellValue(thisWeekNewMember);//本周新增会员数
            row.getCell(7).setCellValue(thisMonthNewMember);//本月新增会员数

            row = sheet.getRow(7);
            row.getCell(5).setCellValue(todayOrderNumber);//今日预约数
            row.getCell(7).setCellValue(todayVisitsNumber);//今日到诊数

            row = sheet.getRow(8);
            row.getCell(5).setCellValue(thisWeekOrderNumber);//本周预约数
            row.getCell(7).setCellValue(thisWeekVisitsNumber);//本周到诊数

            row = sheet.getRow(9);
            row.getCell(5).setCellValue(thisMonthOrderNumber);//本月预约数
            row.getCell(7).setCellValue(thisMonthVisitsNumber);//本月到诊数

            int rowNum = 12;
            for(Map map : hotSetmeal){//热门套餐
                String name = (String) map.get("name");
                Long setmeal_count = (Long) map.get("setmeal_count");
                BigDecimal proportion = (BigDecimal) map.get("proportion");
                row = sheet.getRow(rowNum ++);
                row.getCell(4).setCellValue(name);//套餐名称
                row.getCell(5).setCellValue(setmeal_count);//预约数量
                row.getCell(6).setCellValue(proportion.doubleValue());//占比
            }

            //创建输出流，用于从服务器写数据到客户端浏览器
            ServletOutputStream out = response.getOutputStream();
            response.setContentType("application/vnd.ms-excel");
            response.setHeader("content-Disposition", "attachment;filename=report.xlsx");
            excel.write(out);

            out.flush();
            out.close();
            excel.close();

            return null;
        }catch (Exception e){
            e.printStackTrace();
            return new Result(false, MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }


    //根据性别查询男女会员的占比
    @RequestMapping("/findSexReport")
    public Result findSexReport(){
        try{
            List<String> sexNames = new ArrayList<>();//封装性别名称集合

            List<Map> sexCount = reportService.findSexReport();//性别名称和人数集合

            if(sexCount != null && sexCount.size() > 0){
                for (Map map : sexCount) {
                    String name = (String) map.get("name");//性别名称
                    sexNames.add(name);
                }
            }

            Map<String,Object> map = new HashMap<>();
            map.put("sexNames",sexNames);
            map.put("sexCount",sexCount);
            return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS,map);
        }catch (Exception e){
            e.printStackTrace();
            return new Result(false, MessageConstant.GET_MEMBER_NUMBER_REPORT_FAIL);
        }
    }

    //根据生日查询年龄分组分段占比
    @RequestMapping("/findAgeReport")
    public Result findAgeReport(){

        try {
            List<String> ageNames = new ArrayList<>(); //封装年龄段名称集合

            List<Map> ageCount = reportService.findAgeReport(); //年龄段名称和人数总和

            if (ageCount != null && ageCount.size() > 0){
                for (Map map : ageCount) {
                    String name = (String) map.get("name");//年龄段名称
                    ageNames.add(name);
                }
            }

            Map<String,Object> map = new HashMap<>();
            map.put("ageNames",ageNames);
            map.put("sexCount",ageCount);
            return new Result(true,MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS,map);
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(false,MessageConstant.GET_MEMBER_NUMBER_REPORT_FAIL);
        }
    }

}
